The trailblazer of the CFL-to-NFL movement, Kappy joined the Calgary Stampeders in 1959 after the Washington Redskins drafted him but never offered him a contract.

After eight successful seasons in Canada, Kapp earned a job with the Minnesota Vikings in 1967 and led the team to a Super Bowl appearance in 1969. He is the only player to start at quarterback in the Rose Bowl, Grey Cup and Super Bowl.